compositions



106. COMPOSITIONS, 84 (Z'QATING R PLASTH.

UNITED STATES sulsrrrurso FOR mssmo con.

PATENT OFFICE.

Application filed January 4, I886.

To all whom it may concern.-

1 Be it known that I, Fmi-imuci'i WENDLING,

- of Munich, Bavaria, Germany, have invented a new and Improved Paint,of' which the following specification is a full, clear, and exactdescription.

This invention relates to a composition to be mixed with paint, in orderto render the same impervious to the act-ion of air and wa- .1 0 ter.

Theinvention" consists in the elements of improvement hereinafter morefully pointed out.

The composition consists of the foiiou'ing ingredients: thirty parts ofbasic silicate of ot-assinm or :odiumfifteen to twenty-live parts ofHllOlltC oi caiciumten parts of er .olite; ten to iii cen parts ofmarble or si lea e 0? ma nesiunr fifteen to twenty parts of Basiccarbonate of calcium; ten parts of hos hate 0 ca cium: lhese substancesare finely pow- ;Je're'd and thoroughly intermixed. The composition isadded to the paint, which must be of a nature to resist the actionofhydroxide of 2 potassium' and hydroxide of wlemm. For .one hundredpartsof the composition are taken about fifty parts of the aint and themixture is passed through a hue sieve. To prepare the paint thusobtained for use, there 0 is added slakedlime in the proportion of aboutone part oi iaint to two parts of lime. The'whole mass is then mixed insuflieicnt .water to obtain the proper consistence, after which the massis passed througlra sieve. 5'- The process of painting is the same as inordinary Whitewashin q To har en t e paint after application it isbrushed ove'r with,\vatcr after twenty-four hours,or after being'dry. Ithot water is em- 40 ploye d, the hardening, of the paint is considerablyaccelerated. The same effect is produced by the iuflucnceof the rain andmoista strong mechani PAINT.

1' I SPECIFICATION fanning part of Letters Patent No. 346,336. datedJuly 27; 1886.

Serial No. 187,598. (Specimens? ure. To obtain an extraordinary degreeof to thewat-erwh'ich is employed to moisten the paint, about fifteenper ,centum of dissolved basic silicatgp ilpotas gium Ojjgdllllll.

e process of'hard'fiifig consists, essen- EXAMINER hardness of thepaint, which will resist even cal influence, there is added tially, inthe forniation ofsilicate of calcium-- 5 7 that is, of .fhosecombinations WElOE arise'if carbonate of calcium is exposedtothein'tlucues of dissolved silicate of potassium or sodium. The carbonicacid in the air reacts ou the basic silrca e 0 ca cium, rans airing-thesmmmbydroxid'e of'calcium. "Besides, the carbonic acid combines slowlywith the h drox'rde of calcium added in the form of powder,llEElfiiZ-lllg water, which, in turn, re-

acts to dissolve new parts of the silicate of po tassium. Anotherprocess takes place by the reaction of the cr olite on the hydroxide ofcalcium, forming finely-divided fiuoxideofcalcium which is bound by thesilicate of potassium or sodium. :As the principal transformations takeplace only very slowly under the gradual influence of the carbonic acidin the air and of moisturc,the paint will only obtain its final form"and hardness after some time.

The paint prepared in the above-described manner is impervious to airand water, has a handsome appearance, and may be cheaply produced. v

I elim as my iuveution-- A compositiouof matter adapted to be mixed withpaint, and consisting of silicate of potassium, fluoxide of calcium,crvohtc, marble, basic carbonatepf calcium, mosphateofcaleiumjslibstiiixtialfi as and in the proportions specified.

. FRIEDRICH \VENDLING.

, \Vituesscs:

GUs'r. A'LTHEIMER,

,G DEDRENY. t

